The focused sound technology was successfully used at checkpoints in the Middle East to stop approaching vehicles far back from where guards were stationed. This concept is used in shopping malls to lure shoppers. People in that circle could hear the water, but people a few feet away could not.
He could create the sound of rushing water within a narrow circle in a crowd. Several years back, a garage inventor created the ability to place sound energy at a specific location while canceling sound in other nearby areas. RELATED: Sound as a Weapon Part 3: Protection from Damaging Sounds Focused Sound Technology And moviegoers wondered if this really can happen. They hold their ears and fall to the ground, completely unconscious. We’ve all watched the effects of shrill sounds in sci-fi movies when an entire group of people is made helpless by a loud sound permeating the area. Less powerful sound waves can cause you to experience nausea or discomfort. This is usually sufficient to incapacitate a person. Go above this and life becomes threatened.Īn extremely high-power sound (160 dB) can disrupt or destroy your eardrums and cause severe pain or disorientation. This is why ear protection is recommended for all noisy environments. And at 115 dB you are safe for only 30 seconds. Your body can tolerate 85 dB of sound intensity for eight hours without hearing damage, but at 100 dB, you can only take this for 15 minutes before it affects your health. For silver, the resonant frequency in the earth’s magnetic field would be a low audio 80 Hz (not 4+ MHz).īetween 0 dB and 90 dB, sound intensity is normal and typically won’t damage hearing however, prolonged exposure to sound exceeding 90 dB can cause hearing damage. The magnetic field around the earth can reduce the resonant frequency of material. Even copper can vibrate at just over 28 MHz. Gold can vibrate at 1.7 MHz-silver at between 4.047 and 4.652 MHz. The natural frequency of the earth is 7.83 Hz. It’s possible to shatter glass with sound by producing a note that resonates sympathetically with the glass. Several college students showed that low frequencies between 30 and 60 Hz can actually extinguish a small fire using high-intensity sound.
These sound waves would have to come from very loud objects, sound waves, so powerful they could knock down walls and shake machines to pieces. You will need a 240 dB source to get a person’s head to resonate destructively. It takes a directed concussive effect to vibrate structures to rubble and infrasonic energy to shatter bones and pulp organs from within. In the ‘Walls of Jericho’ scenario, sonic warfare is used to destructively shatter objects and material.
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